package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {
    @Autowired
     private  DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    /**
     * 添加菜品和口味
     * @param dishDTO
     */
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        Long dishId = dish.getId();
        List<DishFlavor> flavors=dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0)
        {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
        }
          dishFlavorMapper.insertBatch(flavors);
    }
    /**
     * 菜品分类查询
     *
     * @param dishDTO
     * @return
     */

    public PageResult QueryPage(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.Query(dishPageQueryDTO);

        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 菜品批量删除操作
     * @param ids
     */
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否是起售状态
       for (Long id: ids)
       {
         Dish dish=dishMapper.getById(id);
         if (dish.getStatus()==StatusConstant.ENABLE)
         {
             throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
         }
       }
       //判断菜品是否和套餐有关联
        List<Long> setmealIds = setmealDishMapper.SetmealIdByDishId(ids);
       if (setmealIds!=null && setmealIds.size()>0)
       {
           throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
       }
       //删除菜品信息

        for (Long id : ids) {
            dishMapper.deleteDishById(id);
            //删除口味
            dishFlavorMapper.deleteDishFlavorByDishId(id);
        }
        //dishMapper.deleteDishByIds(ids);
        //dishFlavorMapper.deleteDishFlavorByDishIds(ids);
    }
    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
